Vulnerability Report

CVE-1999-1226

Title: Netscape Communicator long certificate key DoS (possible code execution)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-1999-1226.

CWE Category NVD-CWE-noinfo

Published Date Oct 28, 1999

Modified Date Apr 16, 2026

Exploit Status Not Found

Score 2.6 CVSS v2.0

Exploit Probability (EPSS)

0.50%

Vulnerability Summary

CVE-1999-1226: Netscape Communicator 4.7 and earlier allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long certificate key.

Impacted Vendors

netscape 1

Reference Links

http://www.securiteam.com/exploits/Netscape_4_7_and_earlier_vulnerable_to__Huge_Key__DoS.html https://exchange.xforce.ibmcloud.com/vulnerabilities/3436 http://www.securiteam.com/exploits/Netscape_4_7_and_earlier_vulnerable_to__Huge_Key__DoS.html https://exchange.xforce.ibmcloud.com/vulnerabilities/3436

CVSS v2.0

Source Entity [email protected]

Severity LOW

2.6

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:H/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-1999-1226 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 03, 2025 MODIFIED

Vulnerability data or affected products updated.

October 28, 1999 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:H/Au:N/C:N/I:N/A:P

Affected Stack

No specific products linked.